Question
Mark the correct increasing order of reactivity of the following compounds with $$HBr/HCl.$$
Mark the correct increasing order of reactivity of the following compounds with $$HBr/HCl.$$
A.
(i) < (ii) < (iii)
B.
(ii) < (i) < (iii)
C.
(ii) < (iii) < (i)
D.
(iii) < (ii) < (i)
Answer :
(ii) < (iii) < (i)
Solution :
The order of stability of benzyl carbocations is :
The electron withdrawing effect of $$ - N{O_2}$$ group is greater than that of $$- Cl$$ group.
Thus, the correct increasing order of reactivity with $$HBr/HCl$$ is : (ii) < (iii) < (i).
The order of stability of benzyl carbocations is :
The electron withdrawing effect of $$ - N{O_2}$$ group is greater than that of $$- Cl$$ group.
Thus, the correct increasing order of reactivity with $$HBr/HCl$$ is : (ii) < (iii) < (i).